An apparatus, method, and computer-readable medium for communicating with multiple subscriptions and dynamic spectrum sharing in a multi-subscriber identity module device are configured to scan for one or more first services corresponding to a first subscription and camp on a first service of the one or more first services corresponding to the first subscription on a first frequency band. The aspects are further configured to determine whether the first frequency band supports Dynamic Spectrum Sharing (DSS) and camp on a second service corresponding to a second subscription on the first frequency band in response to determining that the first frequency band supports the DSS. The aspects are further configured to scan for one or more second services corresponding to a second subscription in response to determining that the first frequency band does not support the DSS and camp on one of the one or more second services.
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2. The method of claim 1, wherein the first service corresponding to the first subscription is New Radio (NR).
3. The method of claim 2, wherein the second service corresponding to the second subscription is Long Term Evolution (LTE).
4. The method of claim 2, wherein the second service corresponding to the second subscription is New Radio (NR).
7. The method of claim 5, wherein the switching of the first service corresponding to the first subscription is based on a reconfiguration message received from a base station.
9. The method of claim 5, wherein the first service corresponding to the first subscription is New Radio (NR).
10. The method of claim 9, wherein the second service corresponding to the second subscription is Long Term Evolution (LTE).
11. The method of claim 9, wherein the second service corresponding to the second subscription is New Radio (NR).
12. The method of claim 1, wherein the scanning for first service corresponding to the first subscription comprises scanning for the first service according to a priority list of frequency bands.
13. The method of claim 12, wherein the priority list of frequency bands includes a first set of frequency bands supporting the DSS at a higher priority than a second set of frequency bands not supporting the DSS.
Dynamic spectrum sharing (DSS) enables wireless networks to share frequency bands between different technologies, such as 4G and 5G, to improve spectrum utilization. A challenge in DSS is efficiently allocating frequency bands to maximize performance while minimizing interference. This invention addresses this by prioritizing frequency bands that support DSS over those that do not. The method involves generating a priority list of frequency bands, where a first set of bands capable of DSS is assigned higher priority than a second set that does not support DSS. This prioritization ensures that DSS-capable bands are used first, optimizing spectrum efficiency and reducing conflicts between different wireless technologies. The method may also include dynamically adjusting the priority list based on network conditions, such as traffic load or interference levels, to further enhance performance. By prioritizing DSS-supporting bands, the invention improves spectrum utilization and supports seamless coexistence of multiple wireless technologies in shared frequency bands.
15. The apparatus of claim 14, wherein the first service corresponding to the first subscription is New Radio (NR).
16. The apparatus of claim 15, wherein the second service corresponding to the second subscription is Long Term Evolution (LTE).
17. The apparatus of claim 15, wherein the second service corresponding to the second subscription is New Radio (NR).
20. The apparatus of claim 18, wherein the switch of the first service corresponding to the first subscription is based on a reconfiguration message received from a base station.
22. The apparatus of claim 18, wherein the first service corresponding to the first subscription is New Radio (NR).
23. The apparatus of claim 22, wherein the second service corresponding to the second subscription is Long Term Evolution (LTE).
24. The apparatus of claim 22, wherein the second service corresponding to the second subscription is New Radio (NR).
25. The apparatus of claim 15, wherein the scan for first service corresponding to the first subscription comprises the processor configured to scan for the first service according to a priority list of frequency bands.
This invention relates to wireless communication systems, specifically improving service discovery and selection for devices with multiple subscriptions. The problem addressed is the inefficiency in scanning for available services across multiple frequency bands, which can lead to delays in establishing connections and increased power consumption. The apparatus includes a processor configured to scan for a first service corresponding to a first subscription. The scan is performed according to a priority list of frequency bands, which optimizes the search process by prioritizing bands more likely to contain the desired service. This prioritization reduces the time and energy required to locate the service, improving overall system efficiency. The apparatus may also include a memory storing the priority list, which can be dynamically updated based on historical usage data or network conditions. The processor may further be configured to adjust the priority list in real-time to adapt to changing network environments, ensuring the most efficient scanning strategy is always employed. Additionally, the apparatus may support multiple subscriptions, allowing it to scan for services associated with different subscriptions simultaneously or in an interleaved manner. This ensures that all subscriptions are serviced efficiently without unnecessary delays. The priority list can be customized for each subscription, further optimizing the scanning process. By implementing this prioritized scanning method, the apparatus enhances service discovery speed and reduces power consumption, making it particularly useful for mobile devices with limited battery life and multiple active subscriptions.
26. The apparatus of claim 25, wherein the priority list of frequency bands includes a first set of frequency bands supporting the DSS at a higher priority than a second set of frequency bands not supporting the DSS.
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October 16, 2020
November 1, 2022
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